PSLEA shop sold three brands of notebooks: Brand J, Brand K, and Brand L. The bar graph shows the number of notebooks sold for each brand in one day.
- How many notebooks were sold altogether?
- The shop collected $1965 from selling the notebooks. The prices of Brand J, Brand K, and Brand L notebooks were in the ratio 4 : 3 : 1. How much money was collected from selling Brand K notebooks?
(a)
Number of Brand J notebooks sold = 38
Number of Brand K notebooks sold = 70
Number of Brand L notebooks sold = 31
Total number of notebooks sold
= 38 + 70 + 31
= 139
(b)
|
Brand J |
Brand K |
Brand L |
Number |
38 |
70 |
31 |
Price |
4 u |
3 u |
1 u |
Total value |
152 u |
210 u |
31 u |
Total amount of money collected
= 152 u + 210 u + 31 u
= 393 u
393 u = 1965
1 u = 1965 ÷ 393 = 5
Amount collected from selling Brand K notebooks
= 210 u
= 210 x 5
= $1050
Answer(s): (a) 139; (b) $1050